The Mixolydian mode is Mode 7 of the church modes used in Gregorian chant. In modern terms, it is most easily described as the scale from G to G using only the white notes of the piano. In order to construct the scale starting on other notes, follow the pattern ascending from tonic: whole step – whole step – half step – whole step – whole step – half step – whole step.
A handout showing the mode starting from all twelve notes is available here.
The Mixolydian mode is considered a major mode because of the major third above the tonic. It differs from the major scale by having a lowered seventh degree. The ancient Greek Mixolydian mode in the diatonic genus resembles the Locrian mode rather than the ecclesiastical Mixolydian mode.
Some themes in the Mixolydian mode include:
- Asperges me
- Puer Natus Est
- In Paradisum